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US 2019/0194520 A1Published application
Viscosifier for oil well fluids
AssigneeElkem ASA
InventorsMohamed AL-BAGOURY, Arianeh AAMODT
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Abstract
The present invention comprises a viscosifter for oil well fluids, said viscosifier comprising a cross-linked micro- or nano-fibrillated cellulose (MFC).
Claims14
A viscosifier for oil well fluids, said viscosifier comprising a cross-linked Micro Fibrillar Cellulose (MFC) microfibers or Micro Fibrillar Cellulose (MFC) nanofibers,
- wherein the MCF is cationic, anionic or non-ionic and selected from the group consisting of TEMPO mediated MFC, Enzymatic assisted MFC, mechanically produced MFC and Carboxymethylated MFC;
- and
- wherein the cross-linking is a chemical cross-linking.
Dependencies are inferred from the claim text.